NAUPLY Stems, in your pocket

What the app does

• Separation on the phone

  A vocal stem and an instrumental stem, processed on the device. Quality or Fast mode.

• Nothing is uploaded

  Your audio, your files and their names never leave the phone. The internet is only used for your account.

• 10 free separations a month

  Up to 15 minutes per song. A cancelled or failed separation is given back.

• No ads

  No ad network, no analytics, no trackers.

• My songs

  Your split songs stay on the phone, with your settings and takes.

• Key and speed

  Key ±6 semitones or speed 50 to 125%, one without changing the other.

• A–B loop

  Loop a passage, click-free, to practise it.

• Sing mode

  With headphones, record up to 2 voices over the instrumental, aligned automatically.

• Video import

  Extract the audio from a video (MP4, MOV, WebM…) or import an audio file.

• BPM and key

  Estimated on the phone ("92 BPM · A minor"), hidden when they're not reliable.

• Remove vocals from a songRemove the vocals from a song on your Android phone with NAUPLY Stems: separation runs on the device, nothing is uploaded, WAV or MP3 export. Free with a NAUPLY account.
• Extract the acapellaIsolate the vocals of a song on Android with NAUPLY Stems: a vocals-only stem computed on the phone, exported as WAV or MP3. Nothing is uploaded.
• Make an instrumentalCreate the instrumental version of a song on your phone with NAUPLY Stems: vocals removed on the device, adjustable key, WAV or MP3 export, nothing uploaded.
• Make a karaoke trackTurn a song into a karaoke track on your phone with NAUPLY Stems: vocals removed, key adjusted to your voice, Sing mode to record yourself. Nothing is uploaded.
• Find the tempo and keyHow to find the BPM and key of a song: what the NAUPLY Stems app estimates on the phone, its honest limits, and how to check by ear.
• Practice trackPractise a song on Android with NAUPLY Stems: vocals removed, 50 to 125% speed, A–B loop, key. What the app does today and what needs the desktop version.

Guides for the app

• Separate vocals and music on Android, offlineHow an Android phone separates the vocals and instrumental of a song without internet: what to prepare before going offline, battery, storage and honest limits.
• Make a karaoke track for a birthdayPreparing a karaoke song for a birthday: choosing the song, removing the vocals on your phone, adjusting the key, preparing the lyrics and testing playback before the day.
• Practise guitar, bass or drums with a track without your instrumentA method to practise a song on guitar, bass or drums: slow down without changing pitch, loop a passage, raise the speed step by step, and remove your instrument from the song.
• Online or on-device stem separation: what's the difference?An honest comparison between stem separation by an online service and separation on your phone or computer: privacy, connection, power, number of stems, cost.